Battery box



' J. F. JOHNSTON ET AL May 19, 1925.

BATTERY BOX Filed Maj) 25, 1921 Inventors John Fhlbhmxton, Geo eWBuZZ -y, W QWWM Aliyaposition blowing agent steam by STATES (PATENT) OFFICE.

Llfilltilii I5. L QEQ E' TGIT AND GEORGE W. BULLEY, DF AKRON, OfiIO, ASSIGNOBS TO THE MILLECQ .i'tll'lllifdfii GOM'IANY, 0F AKROIQX OHIO, A CORPORATION OF OHIO.

BATTERY 1501:.

Application filled m 25, 1021. Serial No. 472,427.

To (all whom may concern:

Be it known that we, JOHIEQF. JoHNs'noN and Gnoncn W, EuLLr-Jv, citizens of the United States, and residents (at Akron, in the county 0?? Summit and State of Chic;- hnve invente certain new and useful Inn provements in Battery Bones, of which the following is u specification.

Uur present invention-relates to improvements in ritibber articles or contein re and is designed more especially for storage buttery cell construction, and is so described" although not limited to such use, and com'-' prises the novel urticle herein fter described end particularly defined, by the appended claims Hcretoforc, so far as we arcuwnre, storage batteries as commercially constructed hut e comprised u lurality of separate or individuct herd rub or cells set in a wooden box surrounded by aspheltmn coin Such assembled form is expensive and unreliable, but the construction of a unitary urticle has heretofore been found impracticable due to moulding" difliculties.

-'l"he present invention aims to ro'vidc a unitary article which will be light in weight but strong and durable acid proott and an excellent heat insulator.

We have discovered that by incorporating in e herd rubber vulcenizing compound a cupable 01": being volatilized by the vulcenizing best, such bard rubber compound could be used for cell wall and bottom construction and when vulcanized would, while being hard and rigid,- have u ccllulur formation which would make it extremely light and of excellent beet insulating quality. Various blowing agents they be used and when the blowing agent is water which is converted into the vulcnnizing heat, thereby producing the cells, the condensation of the steam after the cooling of the container causes the interior of the cell walls to be practically void, thereby melting such walls a still better hoot insulator.

Various modifications of the container structure and of the method of making the scene have been discovered by us in the course or? our investigations, as will hereins.tter uppeer.

lin order that our invention may be more easily understood, we will describe the same in connection with the accompanying drawin which:

and which will be transverse view through the seine.

Figure l is alongitudinal vertical section- Figure 6 is n top plan view of the mould box, partly in section, and

, Figure 7 is a perspective detail of one of the core members. i 7

A container constructed in accordance with our invention is illustrated in inverted position at 1 in Figures 1 end 2. in which it is shown as a, unitery'bettery cell having transverse partitions 1 forming with the side and end walls a plurality of compartments or cells a, a, a, (three being shown as an example of any desired number). The bottom 1 is provided with the customary cross bridges or ribs b for supporting the usual plates (not shown) clear of the bottom, and the edges of the side and end walls and partitions" are preferably rebated, as indicated at a and a to receive individual cover plates (not shown). The side and end walls and bottom are constructed of'vulcsnized hard rubber compound, one or more of the surfaces, prefereblv both, being of dense rubher, as indicated at as and m and the intermediate portion as indicated at y, united.

According to one manner 01% cerrying out our invention, we provide n metal mould 2 comprising side, end and bottom and top walls detachebly connected to other as shown,'the bottom caving core pro ections 2 formed to givejpro or shape to the cell cevities, and such "cove a1 ts being preferably detechably connects ber, whereby theyare' more easily handled. The rejections are covered or wrapped with t in layers or sheets of hard ruber vulcanizing compound. such as indicated at :n', and, if separated iroln the bottom member are reettachedthereto. The side and end walls of the mould are then secured together and to the bottom plate, and if the container is to have a. smootb'dcnsc exterior, said side and end'mould walls would elm be covered the whole being integrelly to the bottom mom container bottom may then be a plied inwith sheets layers of hard rubber compound lhe intervening space is then partially filled with the hard rubber compound a hav-- ing the blowing agent incorporated therein.

This ma be put in sheet or slab form, as, owing to the expansion taking place in vulcanizing there will be ample room to permit the slab containing the blowing agent to he slid or inserted edgewise into place. The

the same Way, to wit, by inserting t 1e bridge forming ieces 1n the core grooves, la mg a sheetofr. rubber over the core ends an less portion of its Wall space depending on the relative thickness and arrangement of the sheets.

As a. modification of this recess, layers of hard rubber compound witli and without blowing agent respectively, could be as seznbled or superimposed to form a composite slab which could then be applied to the core members.

Another modification which We have found advantageous is to assemble the layers over a temporary form and thereafter transfer the same to the mold, thereby permitting the moulds to he kept in more con- P" plying thereon the-layer or slab containing stant use and effecting a saving in mould equipment.

It will be apparent that when desired handles or anchoring devices may be molded integrally and these, when desired, may be reinforced by'including metal rods or wire fabric.

Having thus described our invention, what weclaim is:

1. A container having a hard rubber imervious surface and a cellular hard rublier body integrally united with the walls of the cells intact.

2. A chemical apparatus having impervious chemical-contacting faces of hard rubber reinforced by an integral cellular bacln ing of hard rubber composition.

3. A battery container having an interior lining of solid hard rubber and a supporting structure ofcellular hard rubber vulcanized thereto.

4. A multi le-celled battery container having the cel s formed of solid hard rubher, and a sup orting structure of cellular hard rubber vu c'anized thereto.

5. A multiple-celled battery container composed of solid hard rubber cells, and a cellular hard rubber structure completely surrounding the cells and vulcanized. there to.

6. A rigid structure having impervious hard rubber inner and outer walls and an. intermediate layer of cellular hard rubber vulcanized thereto, with the walls oi the cells intact and their interiors substantially V01 In testimony whereof we aiiix our signatures.

JOHN F. JOHNSTON. GEORGE .W. BULLETi."v 

